YP_AutoCSVDownloader/CSVDownloader/Store/CreditCSVData/CSVDataStore.cs

using System;
using System.Collections.Generic;
using System.Text;

using MySql.Data.MySqlClient;

namespace CSVDownloader.Store.CreditCSVData {

    class CreditCSVData {
        public String spot_id = "";
        public DateTime upd_date = DateTime.Now;
        public String upd_staff = "auto_tool";
        public DateTime reg_date = DateTime.Now;
        public String reg_staff = "auto_tool";
    }
    abstract class CreditCSVDataStore : MySQL {

        public CreditCSVDataStore(MySqlConnection conn) : base(conn) {

        }

        abstract public void Save(List<CreditCSVData> list);

        abstract public int Delete(DateTime from, DateTime to);
    }
}